Veterinary instrument for embryotomy



June 12, 1928. 1,673,242

R. HAUPTNER VETERINARY INSTRUMENT FOR EMBRYO'IOMY Filed April 13, 1927 2 Sheets-Sheet l g 1 17/ Z0 7' :16)? ,9 g vin e 7- June 12, 1928.

1, 73,242 R. HAU PTN ER VETERINARY INSTRUMENT FOR EMBRYOTOMY Filed April 13, 1927 2 Sheets-Sheet 2 7?. mac Q626 QM 7 serves for cutting off, and conveying out of,

Patented June 12, 1928.

UNITED sures OF E-- RUDOLF HAUPTNEB, or' anrgnr r, sna l/rent VETERINARY. INSTRUMENT on E vrBn oroMY.

Application filed April 13, 1927, Serial No. 183,482, and in Germany April 15, 1926.

This invention relates to a veterinary instrument foruse in the case of diflicult births and intended to destroy the foetus, but to save the female animal.

There has been done up to'now in cases of the kind in question a certain preliminary work consisting in introducing a centre-bit with a guiding pointed end for crushing and disintegrating the spine and itssurrounding parts corresponding with the progbody masses in order to decrease the size of the foetus cannot be effected with an instrument of the kind stated,

But that can now be done by means of the improved instrument or device constituting the subject-matter of this invention. It

consists-ofasaw tube, that is to say, a tube of suitab e length and diameter, one end of which has saw-teeth, whereas the other end 1 has laterally extending, grips by which it .can be turned. The saw end of the tube may, besides, be provided with a turnable, as well as shiftable protective tube, or piece of tube, by which the saw teeth can be covered, if de sired ,or necessary, that is to say, iffthere arises a, certain danger that the walls of the sheath or them of the female animal could be hurt by .the teeth when the device is applied. i

The invention comprises also special auxiliary means or additional devices and implements formed by drill-like spindles and harpoon-like members arranged within the saw tube and serving ,as guides, as well as abutments, as more fully described hereinafter. One ofthe additional devices consists of a guide spindle provided at its front end with a knife'that can be unclasped and thebody of the female animal, massesflocated around the spine.

. The.inve,ntion is illustrated.diagrammati cally and by way of example on the accom- ,panying drawings, on which Figure 1. is

r through a saw-tube ,designedaccording to I partly a. side-view of, and partly a section this. invention, together with a' harpoon-' 1ike memberarranged within that tube;-Fi gure 2 is a separate view of the front end of the. saw-tube, drawn to a greatly enlarged scale,

together with .the correspondingly enlarged barbi (Fi 2 'end of the so-called harpoon, this latter being turned 90F with respect to Fig. 1 Figure 3 shows the front end of an ordinary screw- I bit intended as a substitute for the harpoon (in certain cases) Figure 4 shows amodification ofthe parts shown in 1; Figure 5 1s a view similar to Fig. 2, but showing a modification, viz, the same as in'Fig. 4 and Figure 6' is a frontal view of the parts shown in Fig.5.

The instrument consists of the tube a, one end of which is provided with saw-teeth a This end of the tube is, preferably, reduced aflittleindiameter, as 'shown in Fig. 2, in

order to' allow of easier insertion into the body ofthe female animal; Vhen the tube has been inserted to a sufiicientideptlnit can be turned by means of'grips' b'provided at its outer end, audit is, thus, possible to make a circular out which penetrates deeper and deeper in" proportionto the axial shifting forward of the tube during the saw'ing,'- the cut-off portions being received within the tube.

'In order to provide for a guide for the tube, as well as for a meansfor holding it Securely during the sawing operation, a centrally or axially located spindle is provided for instance of theform shown in Fig. 3', in

which the spindle forms a kind of bit or screw-bit 9" which isturned'or screwed into the 'fcetus prior'to applying the saw-tube.

' Instead of the simple screw-bit 7' (Fig. 3), a harpoon-like implement h k (Figs. 1 and 2) maybe employed. Theoutwardlyprojecti-ng endf'o'f the shaft h of the harpoon is provided wit-h a grip'g and with an eye 0.

"The grip is attachable and detachable. The

eye 0 serves for attaching a strong cord or thin rope to the harpoon. Theshaft h" is guided within the tube a by a guide-tube d that is firmly connected with two disks 7' f. The unitedparts f d f can be shifted within the tube, and give way in' proportion to the progress of the cutting, 1. c. in proportion to the cut-off mass entering more and more into the tube.

The harpoon shaft is crooked at k and forms atits end an arrow-head i, the rearwardly directed legof which is designed as i In ordertogive a practical example, it may be supposed that in a given case a foetus of too la'rge size lies with its rear at the sheath ortheca of the femaleanimalf .When

those parts of the skin the muscles of barb is directed upwardly. Now the barpoon is withdrawn so that the barb j engages the rim of the share bone or pubic bone 1 or the front rim of theilium in front of the joint-socket or elsewhere at the basin or pelvis. All this having been effected, the

tube (Ll S shoved forward upon the disks f 7 until its teeth a contact with the foetus. The end of the shaft h is connected with a strong cord or thin rope. Now the tube a is turned by means of the grips Z), and the cord'or.

rope is put under tension, when the toothed end of the tube will penetrate into the foetus,

and the parts severed off in this way will enter into the tube, more and more, down to about 20 cm, depth. These parts can then be drawn out of the foetus and, thus also out of the body of the femaleanimalt The combination of the toothed tube with the harpoon is suited to the purpose also in other cases in which it is necessary to provide guide means for thetoothed' tube and keep these means themselves in proper direction.

Instead of only one barb,two or more may be attached to the end i of the crooked portion k of the harpoon shafth. I

In the modification shown in Figs. 445,

the front-end of the saw-tube is provided with a sleeve e that can be turned, as well as shifted, onthe tube, and the object of which is to cover the saw-teeth a in order to render them inactive in certain cases for a certain time, and to, prevent thereby the female animal from being damaged. The

sleeve e is provided with an oblique guidev slot u engaged by, a pin '12 projecting forth from the tube a. The pin can enter the slot u through a passage m Vhen the working end of the tube a has been carefully introduced into the animal and is then turned a little in counter-clockwise direction, the

sleeve 6 does not take a part in this turning but is retained in its former position, in consequence whereof the sleeve is shlfted axially upon the tube corresponding to the obliquity of the slot 14, its position relatively to the tube being then that shown in dotted lines in Fig. 5, in which position it covers the teeth a? of the tube. tube is turned in the reverse direction in which its teeth could otherwise become active, the sleeve 6 is witlnlrawn from the teeth and now these can effect the sawing.

The guide-spindle s, Fig. 4, consists of a straight steel rod provided at its rear end with a grip {7, as well as with an eye 0, and fitting into the spine channel of the fietus.

When then the The frontend which is the end to be introduced intov said channel is tapered,'and therebehind is a hinge c on which a knife on having'a barbed end 11. can be turned. This device is used when the spine of the foetus is to be drawn out together with the body masses-adhering to it. The rod 8 is inserted into the spine channel of the foetus either from the rear end of the same or, may be,

from the head of the same, and only then the saw-tube is applied. The proper position of the saw tube is secured by the rod 8.

The knife-m does not form an obstacle to inserting-the rod 8 into the spine channel, because its position is then that shown in dotted lines in Fig. 5. ;lVl1en' the rod 3 is withdrawn the barbed end it of the knife m forms an obstacle,'in consequence whereof the knife is erected into the position shown in full lines in Fig. 5. Thereafter the grip g is removed from therod s andnow the saws-tube a is rotated by means of its grip b, it being understood that the sleeve e was in theSposition shown in dotted lines in Fig. 5 when the instrument was applied to the female animal. When thenthe tube a is turned in clockwise direction, the sawing procedure commences, as already described with respect to Figs. 1 and 2. Also the bony projections extending forth laterally from the spine are sawed off. The body por-' tions of the foetus that have been received in the tube a are finally severed off'completely by the knife m, in that this is turned by means of the rod 8, the grip 9 being again secured to the rod for that purpose. As the rod swith the knife m may be used in connection with several tubes having different diameters, itis suited-to the purpose to make the knife m exchangeable,

and provide for a corresponding plurality of knives so that always the proper knife can be employed in connection with a tube of larger or smaller diameter.

I'claim:

1. A veterinary embryotomiev instrument, comprising, in combination, a tube having saw-teeth at one end, a sleeve shiftable rela tive to the toothed end for controlling the activity of the toothed end, and means adapted to effect the shifting of said. sleeve automatically.

. 2. A veterinary embryotomie instrument, comprising, in combination, a tube having saw-teeth at one end, means for turning said tube, a spindle-forming. rod extending lengthwise through the toothed tube, means by which said rod and the tube guide one another, a barbed implement at that end of the said rod which lies in front ofthe toothed end of the said tube, and means for turning thislatter, substantially and for the v purpose set forth. I

3. A veterinary embryotomlc instrument, comprising, 1n combination, a tube having saw-teeth at one end, means for turning said tube, a spindle-forming rod extending lengthwise through the toothed tube, means by which said rod and the tube guide one another, a blade-like barbed implement at that end of the said rod which lies in front of the toothed end of the said tube, and means for turning this latter, substantially and for the purpose set forth;

4. A veterinary embryotomic instrument, comprising, in combination, a tube having saw-teeth at one end, means for turning said tube, a spindle-forming rod extending lengthwise through the toothed tube, means by which said rod and the tube guide one another, a rearwardly directed blade-like barbed implement at that end of the said rod which lies in front of the toothed end of the said tube, and means for turning this latter, substantially and for the purpose set forth.

5. A veterinary embryotomic instrument, comprising, in combination, a tube having saw-teeth at one end, means for turning said tube, a spindle-forming rod extending lengthwise through the toothed tube, means by which said rod and the tube guide one another, a barbed knife-blade hinged to the said rod and extending in the direction to the toothed end of the tube and being adapted to be erected so as to stand about at right angles with respect to the rod, and means for turning the tube, substantially and for the purpose set forth.

7 In testimony whereof I affix my signature.

RUDOLF HAUPTNER. 

